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| Mirrors > Home > MPE Home > Th. List > eulerth | Structured version Visualization version GIF version | ||
| Description: Euler's theorem, a generalization of Fermat's little theorem. If 𝐴 and 𝑁 are coprime, then 𝐴↑ϕ(𝑁)≡1 (mod 𝑁). This is Metamath 100 proof #10. Also called Euler-Fermat theorem, see theorem 5.17 in [ApostolNT] p. 113. (Contributed by Mario Carneiro, 28-Feb-2014.) |
| Ref | Expression |
|---|---|
| eulerth | ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | phicl 16700 | . . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ) | |
| 2 | 1 | nnnn0d 12466 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) ∈ ℕ0) |
| 3 | hashfz1 14273 | . . . . . . 7 ⊢ ((ϕ‘𝑁) ∈ ℕ0 → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) | |
| 4 | 2, 3 | syl 17 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (ϕ‘𝑁)) |
| 5 | dfphi2 16705 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → (ϕ‘𝑁) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
| 6 | 4, 5 | eqtrd 2772 | . . . . 5 ⊢ (𝑁 ∈ ℕ → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
| 7 | 6 | 3ad2ant1 1134 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) |
| 8 | fzfi 13899 | . . . . 5 ⊢ (1...(ϕ‘𝑁)) ∈ Fin | |
| 9 | fzofi 13901 | . . . . . 6 ⊢ (0..^𝑁) ∈ Fin | |
| 10 | ssrab2 4033 | . . . . . 6 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁) | |
| 11 | ssfi 9101 | . . . . . 6 ⊢ (((0..^𝑁) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ⊆ (0..^𝑁)) → {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) | |
| 12 | 9, 10, 11 | mp2an 693 | . . . . 5 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin |
| 13 | hashen 14274 | . . . . 5 ⊢ (((1...(ϕ‘𝑁)) ∈ Fin ∧ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ∈ Fin) → ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1})) | |
| 14 | 8, 12, 13 | mp2an 693 | . . . 4 ⊢ ((♯‘(1...(ϕ‘𝑁))) = (♯‘{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) ↔ (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 15 | 7, 14 | sylib 218 | . . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → (1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 16 | bren 8897 | . . 3 ⊢ ((1...(ϕ‘𝑁)) ≈ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} ↔ ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
| 17 | 15, 16 | sylib 218 | . 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ∃𝑓 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) |
| 18 | simpl 482 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → (𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1)) | |
| 19 | oveq1 7367 | . . . . 5 ⊢ (𝑘 = 𝑦 → (𝑘 gcd 𝑁) = (𝑦 gcd 𝑁)) | |
| 20 | 19 | eqeq1d 2739 | . . . 4 ⊢ (𝑘 = 𝑦 → ((𝑘 gcd 𝑁) = 1 ↔ (𝑦 gcd 𝑁) = 1)) |
| 21 | 20 | cbvrabv 3410 | . . 3 ⊢ {𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1} = {𝑦 ∈ (0..^𝑁) ∣ (𝑦 gcd 𝑁) = 1} |
| 22 | eqid 2737 | . . 3 ⊢ (1...(ϕ‘𝑁)) = (1...(ϕ‘𝑁)) | |
| 23 | simpr 484 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) | |
| 24 | fveq2 6835 | . . . . . 6 ⊢ (𝑘 = 𝑥 → (𝑓‘𝑘) = (𝑓‘𝑥)) | |
| 25 | 24 | oveq2d 7376 | . . . . 5 ⊢ (𝑘 = 𝑥 → (𝐴 · (𝑓‘𝑘)) = (𝐴 · (𝑓‘𝑥))) |
| 26 | 25 | oveq1d 7375 | . . . 4 ⊢ (𝑘 = 𝑥 → ((𝐴 · (𝑓‘𝑘)) mod 𝑁) = ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
| 27 | 26 | cbvmptv 5203 | . . 3 ⊢ (𝑘 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑘)) mod 𝑁)) = (𝑥 ∈ (1...(ϕ‘𝑁)) ↦ ((𝐴 · (𝑓‘𝑥)) mod 𝑁)) |
| 28 | 18, 21, 22, 23, 27 | eulerthlem2 16713 | . 2 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) ∧ 𝑓:(1...(ϕ‘𝑁))–1-1-onto→{𝑘 ∈ (0..^𝑁) ∣ (𝑘 gcd 𝑁) = 1}) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| 29 | 17, 28 | exlimddv 1937 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ (𝐴 gcd 𝑁) = 1) → ((𝐴↑(ϕ‘𝑁)) mod 𝑁) = (1 mod 𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∃wex 1781 ∈ wcel 2114 {crab 3400 ⊆ wss 3902 class class class wbr 5099 ↦ cmpt 5180 –1-1-onto→wf1o 6492 ‘cfv 6493 (class class class)co 7360 ≈ cen 8884 Fincfn 8887 0cc0 11030 1c1 11031 · cmul 11035 ℕcn 12149 ℕ0cn0 12405 ℤcz 12492 ...cfz 13427 ..^cfzo 13574 mod cmo 13793 ↑cexp 13988 ♯chash 14257 gcd cgcd 16425 ϕcphi 16695 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 ax-pre-sup 11108 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4904 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-oadd 8403 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-inf 9350 df-card 9855 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12150 df-2 12212 df-3 12213 df-n0 12406 df-xnn0 12479 df-z 12493 df-uz 12756 df-rp 12910 df-fz 13428 df-fzo 13575 df-fl 13716 df-mod 13794 df-seq 13929 df-exp 13989 df-hash 14258 df-cj 15026 df-re 15027 df-im 15028 df-sqrt 15162 df-abs 15163 df-dvds 16184 df-gcd 16426 df-phi 16697 |
| This theorem is referenced by: fermltl 16715 prmdiv 16716 odzcllem 16724 odzphi 16728 vfermltl 16733 lgslem1 27268 lgsqrlem2 27318 |
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